[Issue 19983] Add fast path using slice assignment to std.internal.cstring.tempCString

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19983

Nathan S. <n8sh.secondary at hotmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Add fast path for           |Add fast path using slice
                   |std.internal.cstring.tempCS |assignment to
                   |tring when copying an array |std.internal.cstring.tempCS
                   |without transcoding         |tring

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